MC5-Water

= Marsh Creek Site 5 = = Water Quality =



__Physical and Chemical Parameters__
Every monitoring visit measured basic physical and chemical parameters of Long Island Creek sites 5A and 5B which, according to GA-Adopt-A-Stream (AAS), allows for "specific water quality characteristics" to by analyzed. According to AAS, basic physical parameters include air and water temperatures, relative humidity, and water conductivity. Chemical data includes pH, dissolved oxygen (mg/L), Nitrate-Nitrogen (mg/L), and Phosphate (mg/L).

Marsh Creek site 5 (MC5) data collection was carried out three times at the same location, once a week over a period of three consecutive weeks in June approximately at the same time in the late morning through early afternoon. Overall, physical and chemical data collected remained stable and within a healthy stream range. As the table below indicates, pH averaged at 6.83, indicating a near-neutral level and falling under the "optimal range for most aquatic organisms" ([|GA-AAS Complete Manual]) of pH 6.5 to pH 8.2.
 * __Data Collected__ **

The average conductivity level was 100 us/cm, which remains within the 0 to 1500 us/cm levels of rivers in Georgia and within the 50 to 500 us/cm range of inland "streams supporting mixed fisheries". Nitrate and and Phosphate were carried out in the lab after every water collection and as the table below demonstrates, neither nutrients were present at Marsh Creek site 5.

Air temperature widely ranged between 24 and 32 degrees Celsius, with an average of 28.17 degrees Celsius between all monitoring visits. As the chart below shows, relative humidity ranged between 58% to 79%, measuring an average of 69% during monitoring. Water temperature and dissolved oxygen results can be observed in the chart below. Water temperature remained stable during data collection with an average of 22.67 degrees Celsius and dissolved oxygen averaged at 6.05 ppm, which ranged at a healthy level to support most aquatic organisms ([|GA-AAS Complete Manual]). Click on the link below for the overall results of the Watershed Assessment and Analysis 2012 .

Watershed level water quality data can be found here. Watershed level methodology can be found here. GA-Adopt-A-Stream: Complete Manual - Biological & Chemical Stream Monitoring can be found [|here].

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